<!DOCTYPE html>
<html lang="en">
<head>
    <meta charset="UTF-8">
    <meta name="viewport" content="width=device-width, initial-scale=1.0">
    <title>flex布局</title>
    <link rel="stylesheet" href="./css/1-flex.css">
</head>
<body>
    <div class="box">
        <div class="son1"></div>
        <div class="son2"></div>
        <div class="son3"></div>
        <div class="son4"></div>
        <div class="son5"></div>
        <div class="son6"></div>
        <div class="son1"></div>
        <div class="son2"></div>
        <div class="son3"></div>
        <div class="son4"></div>
        <div class="son5"></div>
        <div class="son6"></div>
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    <div>
        
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</body>
</html>